Dual wavelength surgical laser system
US6358243B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/207
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dual wavelength surgical laser system for performing laser surgery on living tissue with a minimum amount of collateral tissue damage is disclosed. The dual wavelength surgical laser system comprises: a pump laser for emitting pump laser pulses of light at a preselected pump wavelength; an optical parametric oscillator responsive to each pump pulse from the pump laser for producing a first wavelength pulse of light in a water absorption band of the tissue and a second wavelength pulse of light in a protein absorption band of the tissue; a first set of optics for only passing therethrough each first wavelength pulse from the optical parametric oscillator; an optical delay line for delaying each first wavelength pulse from the first set of optics by a predetermined period of time; a second set of optics for only passing therethrough each second wavelength pulse from the optical parametric oscillator; and a beam combiner for combining each second wavelength pulse with the following delayed first wavelength pulse to form a stream of consecutive second and delayed first pulse pairs for application to the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.